I can't swap switch's because the 73 goes in my 73. I just removed it as I was trying to figure out differences. The 73 is now back in it's home. The 70 doesn't have a wiper motor yet. I just had the switch so I am trying to build upon that.
Moparal, Why do you say that the two speed has the foor pump washer? I havn't played with one of those yet.
The wiring harness in my 70 is not originally from that car. I had nothing to start with.